| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Communicate Clearly NOW! | 978-1-4515-3670-6 (1-4515-3670-4) | 2010 |
| Communicate Clearly NOW! | 978-1-4515-7061-8 (1-4515-7061-9) | 2010 |
C.D. · C.P. · C.R. · Charles D · Charles Demers · Charles P. · Charles R. · D. P. · R.D. · R. P.